There are stars and galaxies and whatever space objects everywhere we look weither it’s up, down, left or right. Yet, scientists say that the universe is flat? How?
In: Physics
“Flat” is subjective. The Earth is flat if you only look in 2 dimensions for less than 8 miles or so. But that “flat” surface curves away in a 3rd dimension, forming a sphere. The idea, or so i believe, is that the 3 dimensional universe may curve away in a 4th dimension, so that it appears to be 3D where we are, but like the earth’s surface it curves so that you can reach your starting point by going in one direction. The only way this would be possible without us knowing it right away is if the universe is immensely huge so that we can’t feasibly percieve the curvature. So it would technically be a curving “flat” surface instead of one huge round 3D shape.
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